Browse by Subject "louvered-fin heat exchangers"

Xia, Y.; Hrnjak, P.S.; Jacobi, A.M.(Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2006-12)

The thermal-hydraulic behavior of folded-louvered-fin, microchannel heat exchangers is explored under
conditions of air-side frosting, defrosting, and refrosting. The temperature distribution within a two-dimensional
composite ...

Zhang, X.; Tafti, D.K.(Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2000-04)

The study classifies and isolates the effects of thermal wake interference that occurs in multilouvered
fins. Inter-fin interference occurs between adjacent rows of louvers and is dominant at high flow efficiencies
when ...

DeJong, N.C.; Jacobi, A.M.(Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1995-10)

The efficiency of heat exchangers is important in the HV ACIR industry. Driven by high
energy standards and increasing competition, manufacturers are seeking to decrease air-side
resistance in heat exchangers by increasing ...

Bellows, K.D.(Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1997-07)

This study involves visualization of the flow through louvered fins Jor automotive
heat exchangers. Stereolithography scale models (10.5: 1) of the louvered fins are used
with dye-in-water injection to observe the flow. ...

Tafti, D.K.; Zhang, X.(Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2000-08)

The effect of fin pitch, louver angle and thickness, and flow depth on the onset, propagation, and characteristic
frequencies of instabilities in multilouvered fins is investigated. The initial instability appears in the ...

The heat transfer enhancement mechanisms and the performance of parallel-plate-fin heat exchangers
are studied using large scale direct numerical simulation. Geometry effects such as finite
fin thickness and fin arrangements ...

The paper describes the computational procedure and
results from large-eddy simulations in a complex three-dimensional
louver geometry. The three-dimensionality in the
louver geometry occurs along the height of the fin, ...

Zhang, L.W.; Balachandar, S.(Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1996-08)

An accurate computational method for the calculations of flow and heat transfer in compact heat
exchangers is developed in collaboration with the National Center for Supercomputing Applications.
In this method, the ...